DESIGN AND CONSTRUCTION OF AUTO INTRUDER ALARM

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DESIGN AND CONSTRUCTION OF AUTO INTRUDER ALARM

ABSTRACT

This project work deals on the Design and Construction of Intruder Detector Alarm System with Direction/Location Display which is capable of detecting intrusion at any location, sound and alarm and display the exact location of the intruder using seven segment displays. This project work is realized using top down methodology with active and passive components available in the local market. It is realized in different modules, all combined to form one function unit. The inputs are optocouplers configured with laser diodes and light Dependent Resistor. (LDR) which act as the electronic eyes installed at the sensory points. The control unit is made up of one short delay circuit, audio frequency generator, priority encoder and decoder, piezo-buzzer and single digit seven segment display. The system is packaged in a well furnished wooden material. This system does not record/display the intruder. In a case of simultaneous intrusion, the display shows the location with the highest priority. And the system is powered from MAINS supply. The result being a system which can detect intrusion,, sound an audible alarm and displays the exact location of the intruder. It has a wide a range of application in surveillance especially in industrial home security.

DESIGN AND CONSTRUCTION OF AUTO INTRUDER ALARM

CHAPTER ONE

1.1 BACKGROUND OF THE STUDY

As the world is developing the need for electronics in human endevour is now taking a lager scope. With the inventions of certain electronic gadgets in our society today. Certain activities become easily handed for example; in communication when the telephone plays a path. In places where safety is needed on alarm system will be of much important. The application of electronic in this modern age is simply inexhaustible and this group take more interest in the case of burglary in homes, cars and industry. The selection of a proper alarm is not a simple matter, because the need of each individual home owner or businessman is different like a set of finger prints.

Some factors and questions which must be answered when selecting an alarm system includes:

  1. a) What system needed to be protected?.
  2. b) What type of senior are needed?.
  3. c) The method of transmission needed forth alarm signal.

The purpose of producing the alarm system is to limit the effect of the criminology in the society by informing us that our properties are in danger. All these will bring alarm the way by which criminal break into private properties by scaring them away once the alarm is trigger on.

The type of alarm system been built is called intruder alarm system and it is simple but effective alarm circuit which can reset its self after a time that which have been selected. It has normally closed and normally open triggers which make this door as a switch so as to triggers. An intruder alarm for home and office use is a design that detects the presence of an intruder in restricted areas and also informs the user by triggering an alarm. The system is based on hardware controller and other electronic design. This hardware controller uses two sensors, one for human touch sensing and the other for movement. The movement sensor uses light dependent resistor which must work in hand with a security light incident to it. With the security light, the system can receive signal when the intruder is around and translate the received signal from the sensors to useful information. In this design we have implored the use of hardware components, creativity and logics to bring about the entire project.

1.2    AIMS AND OBJECTIVE

The aim and objective of this project is to develop a cost effective and efficient auto intruder alarm security device for home and office use, to offer its users a paramount security.

1.3    SCOPE OF THE PROJECT

The system can sense human touch and movement then triggers an alarm when powered with a 9v battery. It is a home intruder system that stops intruders before they get in and can summon help immediately making sure the family under its protection is absolutely safe.

The scope of the project specifies the extent of which the project will be limited to an LDR (Light Dependent Resistor) based on shadow detector. The LDR works only when the intruder is obstruction of light.

1.4   JUSTIFICATION OF THE PROJECT

This project makes it difficult for intruders to break into a home when there is a spotlight shining down to them. Then with the light dependent resistor that works with the spot of light, makes this project a home intruder system that keeps criminals further away from a family.

1.5   LIMITATION OF THE WORK

The biggest setback experienced during the course of this project is financial difficulties in funding the design of the project Secondly, sourcing of materials and components used was not easy. Finding the motion sensor wasn’t an easy task. Some of the components I used for this project were very difficult to find like the transistor for buffer. Furthermore, I received a severe electric shock while trying to interface some circuits into my design that made me to almost give up.

  • SIGNIFICANT OF THE WORK

The significant of this work is to provide security in our various places to keep us alert when an unknown or unwanted people come in. To keep us prepared at any given time.

 

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